To prevent car theft a car system might require destination information to be entered in.
home - by voice
airport - by voice
San Francisco International - by voice
Apple - by voice
sister (sister’s home) - by voice
San Mateo - by voice
authorized cell phone destination specified
All of those would have to be by an authorized voice.
If unusual, a four-digit voice code would have to be given.
If the wrong voice code is given the car would be speed limited to say 35 mph and by 5 mph less a minute.
deter car theft
Also, the car would get speed limited if driven more than one mile off course.